For 13 years he was again the unpaid creator of the official wardrobe of Empress Farah Pahlavi and was instrumental in reviving handicrafts and fabrics, bringing them to the level of his creation of The Exclusive Royal Haute Couture. Simultaneously he created the first boutique for young men’s wear, Elegant 27, a shared project with Kamran Diba in 1966–1967, and then his own famous boutiques Number One and Miss Number One, through which he revolutionized the young generation’s look.
Four creations of his Royal Wardrobes were donated by Khosrovani as part of the permanent collection of Musée de la Mode of Paris at the Palais Galliera. His architectural work includes the Mehmansaray Nayin for the Ministry of tourism. He was also unpaid architect for a library in the Gowd Zanbourak Khaneh, a slum area of Tehran, and for Kanoon Pavaresh Fekri Koudakan va Nojavanan. In addition he designed his family’s residence in Farmanieh.

